Linked from
The 11 pages that link to Disjunction, each with the reason it gives.
Natural deductionRelated: Its rules distinguish proving one alternative from reasoning by cases.
Material conditionalRelated: The conditional p → q is equivalent to ¬p ∨ q in classical logic.
Augustus De MorganRelated: The other connective transformed by De Morgan’s laws.
ConjunctionRelated: Or links alternatives in language and often corresponds to logical disjunction.